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Measurement of the volumes discharged by the Nile during 1905 and 1906 / by E. M. Dowson ; with a note on rating formulæ for current-meters by J. I. Craig.
- 551.483
- Dowson, Ernest, 1876-
- National Printing Department,
- 1909.
- Cairo :
-
determination of altitudes by levelling / by E. M. Dowson.
- 551.432 D752
- Dowson, Ernest, 1876-
- National Printing Department,
- 1908.
- Cairo :